<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * display information about indexes in a table
 *
 * @version $Id: tbl_indexes.php 11058 2008-01-17 17:50:31Z lem9 $
 */

/**
 * Gets some core libraries
 */
require_once './libraries/common.inc.php';
require_once './libraries/tbl_indexes.lib.php';

/**
 * Ensures the db & table are valid, then loads headers and gets indexes
 * informations.
 * Skipped if this script is called by "tbl_sql.php"
 */
if (!defined('PMA_IDX_INCLUDED')) {
	// Not a valid db name -> back to the welcome page
	if (strlen($db)) {
		$is_db = PMA_DBI_select_db($db);
	}
	if (!strlen($db) || !$is_db) {
		$uri_params = array('reload' => '1');
		if (isset($message)) {
			$uri_params['message'] = $message;
		}
		PMA_sendHeaderLocation($cfg['PmaAbsoluteUri'] . 'main.php'
			. PMA_generate_common_url($uri_params, '&'));
		exit;
	}
	// Not a valid table name -> back to the default db sub-page
	if (strlen($table)) {
		$is_table = PMA_DBI_query('SHOW TABLES LIKE \''
			. PMA_sqlAddslashes($table, TRUE) . '\'', null, PMA_DBI_QUERY_STORE);
	}
	if (! strlen($table)
	  || !($is_table && PMA_DBI_num_rows($is_table))) {
		$uri_params = array('reload' => '1', 'db' => $db);
		if (isset($message)) {
			$uri_params['message'] = $message;
		}
		PMA_sendHeaderLocation($cfg['PmaAbsoluteUri']
			. $cfg['DefaultTabDatabase']
			. PMA_generate_common_url($uri_params, '&'));
		exit;
	} elseif (isset($is_table)) {
		PMA_DBI_free_result($is_table);
	}

	// Displays headers (if needed)
	$js_to_run = isset($index) && isset($do_save_data)
		? 'functions.js'
		: 'indexes.js';
	require_once './libraries/header.inc.php';
} // end if


/**
 * Gets fields and indexes informations
 */
if (!defined('PMA_IDX_INCLUDED')) {
	$err_url_0 = 'db_sql.php?' . PMA_generate_common_url($db);
}

//  Gets table keys and store them in arrays
$indexes	  = array();
$indexes_info = array();
$indexes_data = array();
// keys had already been grabbed in "tbl_sql.php"
if (!defined('PMA_IDX_INCLUDED')) {
	$ret_keys = PMA_get_indexes($table, $err_url_0);
}

PMA_extract_indexes($ret_keys, $indexes, $indexes_info, $indexes_data);

// Get fields and stores their name/type
// fields had already been grabbed in "tbl_sql.php"
if (!defined('PMA_IDX_INCLUDED')) {
	$fields_rs   = PMA_DBI_query('SHOW FIELDS FROM '
		. PMA_backquote($table) . ';');
	$save_row   = array();
	while ($row = PMA_DBI_fetch_assoc($fields_rs)) {
		$save_row[] = $row;
	}
}

$fields_names		   = array();
$fields_types		   = array();
foreach ($save_row AS $saved_row_key => $row) {
	$fields_names[]	 = $row['Field'];
	// loic1: set or enum types: slashes single quotes inside options
	if (preg_match('@^(set|enum)\((.+)\)$@i', $row['Type'], $tmp)) {
		$tmp[2]		 = substr(preg_replace('@([^,])\'\'@', '\\1\\\'',
			',' . $tmp[2]), 1);
		$fields_types[] = $tmp[1] . '(' . str_replace(',', ', ', $tmp[2]) . ')';
	} else {
		$fields_types[] = $row['Type'];
	}
} // end while

if ($fields_rs) {
	PMA_DBI_free_result($fields_rs);
}


/**
 * Do run the query to build the new index and moves back to
 * "tbl_sql.php"
 */
if (!defined('PMA_IDX_INCLUDED')
	&& (isset($index) && isset($do_save_data))) {

	$err_url	 = 'tbl_indexes.php?' . PMA_generate_common_url($db, $table);
	if (empty($old_index)) {
		$err_url .= '&amp;create_index=1&amp;idx_num_fields=' . $idx_num_fields;
	} else {
		$err_url .= '&amp;index=' . urlencode($old_index);
	}

	if ($index_type == 'PRIMARY') {
		if ($index == '') {
			$index = 'PRIMARY';
		} elseif ($index != 'PRIMARY') {
			PMA_mysqlDie($strPrimaryKeyName, '', FALSE, $err_url);
		}
	} elseif ($index == 'PRIMARY') {
		 PMA_mysqlDie($strCantRenameIdxToPrimary, '', FALSE, $err_url);
	}


	// $sql_query is the one displayed in the query box
	$sql_query		 = 'ALTER TABLE ' . PMA_backquote($table);

	// Drops the old index
	if (!empty($old_index)) {
		if ($old_index == 'PRIMARY') {
			$sql_query .= ' DROP PRIMARY KEY,';
		} else {
			$sql_query .= ' DROP INDEX ' . PMA_backquote($old_index) .',';
		}
	} // end if

	// Builds the new one
	switch ($index_type) {
		case 'PRIMARY':
			$sql_query .= ' ADD PRIMARY KEY (';
			break;
		case 'FULLTEXT':
			$sql_query .= ' ADD FULLTEXT '
				. (empty($index) ? '' : PMA_backquote($index)) . ' (';
			break;
		case 'UNIQUE':
			$sql_query .= ' ADD UNIQUE '
				. (empty($index) ? '' : PMA_backquote($index)) . ' (';
			break;
		case 'INDEX':
			$sql_query .= ' ADD INDEX '
				. (empty($index) ? '' : PMA_backquote($index)) . ' (';
			break;
	} // end switch
	$index_fields		 = '';
	foreach ($column AS $i => $name) {
		if ($name != '--ignore--') {
			$index_fields .= (empty($index_fields) ? '' : ',')
						  . PMA_backquote($name)
						  . (empty($sub_part[$i])
								? ''
								: '(' . $sub_part[$i] . ')');
		}
	} // end while
	if (empty($index_fields)){
		PMA_mysqlDie($strNoIndexPartsDefined, '', FALSE, $err_url);
	} else {
		$sql_query .= $index_fields . ')';
	}

	$result	= PMA_DBI_query($sql_query);
	$message   = $strTable . ' ' . htmlspecialchars($table) . ' '
		. $strHasBeenAltered;

	$active_page = 'tbl_structure.php';
	require './tbl_structure.php';
} // end builds the new index


/**
 * Edits an index or defines a new one
 */
elseif (!defined('PMA_IDX_INCLUDED')
		 && (isset($index) || isset($create_index))) {

	// Prepares the form values
	if (!isset($index)) {
		$index								= '';
	}
	if (!isset($old_index)){
		$old_index							= $index;
	}
	if (!isset($index_type)) {
		$index_type						   = '';
	}
	if ($old_index == '' || !isset($indexes_info[$old_index])) {
		$edited_index_info['Sequences']	   = array();
		$edited_index_data					= array();
		for ($i = 1; $i <= $idx_num_fields; $i++) {
			$edited_index_info['Sequences'][] = $i;
			$edited_index_data[$i]			= array('Column_name' => '',
				'Sub_part' => '');
		} // end for
		if ($old_index == ''
			&& !isset($indexes_info['PRIMARY'])
			&& ($index_type == '' || $index_type == 'PRIMARY')) {
			$old_index						= 'PRIMARY';
		}
	} else {
		$edited_index_info					= $indexes_info[$old_index];
		$edited_index_data					= $indexes_data[$old_index];


		if ((PMA_MYSQL_INT_VERSION < 40002
			&& $edited_index_info['Comment'] == 'FULLTEXT')
		  || (PMA_MYSQL_INT_VERSION >= 40002
			&& $edited_index_info['Index_type'] == 'FULLTEXT')) {
			$index_type					   = 'FULLTEXT';
		} elseif ($index == 'PRIMARY') {
			$index_type					   = 'PRIMARY';
		} elseif ($edited_index_info['Non_unique'] == '0') {
			$index_type					   = 'UNIQUE';
		} else {
			$index_type					   = 'INDEX';
		}
	} // end if... else...

	if (isset($add_fields)) {
		if (isset($prev_add_fields)) {
			$added_fields += $prev_add_fields;
		}
		$field_cnt = count($edited_index_info['Sequences']) + 1;
		for ($i = $field_cnt; $i < ($added_fields + $field_cnt); $i++) {
			$edited_index_info['Sequences'][] = $i;
			$edited_index_data[$i]			= array('Column_name' => '',
				'Sub_part' => '');
		} // end for

		// Restore entered values
		foreach ($column AS $i => $name) {
			if ($name != '--ignore--'){
				$edited_index_data[$i+1]['Column_name'] = $name;
				$edited_index_data[$i+1]['Sub_part']	= $sub_part[$i];
			}
		} // end while
	} // end if
	// end preparing form values
	?>

<div style="float: left;">
<form action="./tbl_indexes.php" method="post" name="index_frm"
	onsubmit="if (typeof(this.elements['index'].disabled) != 'undefined') {
		this.elements['index'].disabled = false}">
	<?php echo PMA_generate_common_hidden_inputs($db, $table); ?>
	<?php
	if (isset($create_index)) {
		echo '<input type="hidden" name="create_index" value="1" />' . "\n";
	}
	if (isset($added_fields)) {
		echo '	<input type="hidden" name="prev_add_fields" value="'
			. $added_fields . '" />' . "\n";
	}
	if (isset($idx_num_fields)) {
		echo '	<input type="hidden" name="idx_num_fields" value="'
			. $idx_num_fields . '" />' . "\n";
	}
	?>
<input type="hidden" name="old_index" value="<?php
	echo (isset($create_index) ? '' : htmlspecialchars($old_index)); ?>" />

<fieldset>
	<legend>
	<?php
	echo (isset($create_index) ? $strCreateIndexTopic : $strModifyIndexTopic);
	?>
	</legend>

<div class="formelement">
<label for="input_index_name"><?php echo $strIndexName; ?></label>
<input type="text" name="index" id="input_index_name" size="25"
	value="<?php echo htmlspecialchars($index); ?>" onfocus="this.select()" />
</div>

<div class="formelement">
<label for="select_index_type"><?php echo $strIndexType; ?></label>
<select name="index_type" id="select_index_type" onchange="return checkIndexName()">
	<?php
	foreach (PMA_get_indextypes() as $each_index_type) {
		if ($each_index_type === 'PRIMARY'
		 && $index !== 'PRIMARY'
		 && isset($indexes_info['PRIMARY'])) {
			// skip PRIMARY if there is already one in the table
			continue;
		}
		echo '				'
			 . '<option value="' . $each_index_type . '"'
			 . (($index_type == $each_index_type) ? ' selected="selected"' : '')
			 . '>'. $each_index_type . '</option>' . "\n";
	}
	?>
</select>
<?php echo PMA_showMySQLDocu('SQL-Syntax', 'ALTER_TABLE'); ?>
</div>


<br class="clearfloat" />
<div class="warning"><?php echo $strPrimaryKeyWarning; ?></div>

<table>
<thead>
<tr><th><?php echo $strField; ?></th>
	<th><?php echo $strSize; ?></th>
</tr>
</thead>
<tbody>
	<?php
	$odd_row = true;
	foreach ($edited_index_info['Sequences'] as $seq_index) {
		$add_type	 = (is_array($fields_types) && count($fields_types) == count($fields_names));
		$selected	 = $edited_index_data[$seq_index]['Column_name'];
		if (!empty($edited_index_data[$seq_index]['Sub_part'])) {
			$sub_part = ' value="' . $edited_index_data[$seq_index]['Sub_part'] . '"';
		} else {
			$sub_part = '';
		}
		?>

<tr class="<?php echo $odd_row ? 'odd' : 'even'; ?>">
	<td><select name="column[]">
			<option value="--ignore--"
				<?php if ('--ignore--' == $selected) { echo ' selected="selected"'; } ?>>
				-- <?php echo $strIgnore; ?> --</option>
		<?php
		foreach ($fields_names AS $key => $val) {
			if ($index_type != 'FULLTEXT'
				|| preg_match('@^(varchar|text|tinytext|mediumtext|longtext)@i', $fields_types[$key])) {
				echo "\n" . '				'
					 . '<option value="' . htmlspecialchars($val) . '"'
					 . (($val == $selected) ? ' selected="selected"' : '') . '>'
					 . htmlspecialchars($val) . (($add_type) ? ' ['
					 . $fields_types[$key] . ']' : '') . '</option>' . "\n";
			}
		} // end foreach $fields_names
		?>

		</select>
	</td>
	<td><input type="text" size="5" onfocus="this.select()"
			name="sub_part[]"<?php echo $sub_part; ?> />
	</td>
</tr>
		<?php
		$odd_row = !$odd_row;
	} // end foreach $edited_index_info['Sequences']
	?>
</tbody>
</table>
</fieldset>

<fieldset class="tblFooters">
	<input type="submit" name="do_save_data" value="<?php echo $strSave; ?>" />
	<?php
	echo $strOr;
	echo '	' . sprintf($strAddToIndex,
			'<input type="text" name="added_fields" size="2" value="1"'
		.' onfocus="this.select()" />') . "\n";
	echo '	<input type="submit" name="add_fields" value="' . $strGo . '"'
		.' onclick="return checkFormElementInRange(this.form,'
		.' \'added_fields\', \''
		. str_replace('\'', '\\\'', $GLOBALS['strInvalidColumnCount'])
		. '\', 1)" />' . "\n";
	?>
</fieldset>
</form>
</div>
<?php
} else {
	/**
	 * Display indexes
	 */
	?>
	<form action="./tbl_indexes.php" method="post"
		onsubmit="return checkFormElementInRange(this, 'idx_num_fields',
			'<?php echo str_replace('\'', '\\\'', $GLOBALS['strInvalidColumnCount']); ?>',
			1)">
	<?php
	echo PMA_generate_common_hidden_inputs($db, $table);
	?>
	<table id="table_indexes" class="data">
		<caption class="tblHeaders">
		<?php
		echo $strIndexes . ':' . "\n";
		echo '		' . PMA_showMySQLDocu('optimization',
			'optimizing-database-structure');
		?>

		</caption>
	<?php

	if (count($ret_keys) > 0) {
		$edit_link_text = '';
		$drop_link_text = '';

		if ($cfg['PropertiesIconic'] === true || $cfg['PropertiesIconic'] === 'both') {
			$edit_link_text = '<img class="icon" src="' . $pmaThemeImage
				. 'b_edit.png" width="16" height="16" title="' . $strEdit
				. '" alt="' . $strEdit . '" />';
			$drop_link_text = '<img class="icon" src="' . $pmaThemeImage
				. 'b_drop.png" width="16" height="16" title="' . $strDrop
				. '" alt="' . $strDrop . '" />';
		}
		if ($cfg['PropertiesIconic'] === false || $cfg['PropertiesIconic'] === 'both') {
			$edit_link_text .= $strEdit;
			$drop_link_text .= $strDrop;
		}
		if ($cfg['PropertiesIconic'] === 'both') {
			$edit_link_text = '<nobr>' . $edit_link_text . '</nobr>';
			$drop_link_text = '<nobr>' . $drop_link_text . '</nobr>';
		}
		?>

		<thead>
		<tr><th><?php echo $strKeyname; ?></th>
			<th><?php echo $strType; ?></th>
			<th><?php echo $strCardinality; ?></th>
			<th colspan="2"><?php echo $strAction; ?></th>
			<th colspan="2"><?php echo $strField; ?></th>
		</tr>
		</thead>
		<tbody>
		<?php
		$idx_collection = PMA_show_indexes($table, $indexes, $indexes_info,
			$indexes_data, true);
		echo PMA_check_indexes($ret_keys);
	} // end display indexes
	else {
		// none indexes
		echo '<tbody>'
			.'<tr><td colspan="7"><div class="warning">' . $strNoIndex
			.'</div></td></tr>' . "\n";
	}
	?>

	<tr class="tblFooters"><td colspan="7">
	<?php echo sprintf($strCreateIndex,
		'<input type="text" size="2" name="idx_num_fields" value="1" />'); ?>
	<input type="submit" name="create_index" value="<?php echo $strGo; ?>"
		onclick="return checkFormElementInRange(this.form,
			'idx_num_fields',
			'<?php echo str_replace('\'', '\\\'', $GLOBALS['strInvalidColumnCount']); ?>',
			1)" />
	</td></tr>
	</tbody>
	</table>
	</form>
	<?php
} // end display indexes


/**
 * Displays the footer
 */
echo "\n";

if (!defined('PMA_IDX_INCLUDED')){
	require_once './libraries/footer.inc.php';
}
?>
